RADICO Technologies methodology
IAEA-TECDOC-1537: When characterization is conducted at the point of waste generation or production, it can be carried out more simply and accurately without having to make assumptions that need to be validated.
Characterization will be less expensive when performed at the earliest practical stage in the waste life cycle. Early waste characterization also has safety benefits: the waste is likely to be handled less, samples are likely to be representative, and waste characteristics are likely to be more accurate.